Derrick.



M.- V. B. RULAND.

DERRICK.

APPLICATION FILED APILZB, 1915.

Patented Mar. 7, 1916.

1y COLUMBIA PLANOURAPH co.. WASHINGTON. DIC. Y

7 connected at its upper end with any suitable MARTIN V. B. RULAND, on NEW YORK, 1v. Y.

DERRICK.

Specification of Letters Patent.

Application filed April 28, 1915. Serial No. 24,417.

To allfwhom it may concern Be 1t known that I, MARTIN V. B. RULAND,

a citizen of the United States, and resident of the borough of Brooklyn, county of Kings, city and State of New York, have made certain new and useful Inventions Relating to Derricks, of which the following is a specification, taken in connection with the accompanying drawing, which forms part of the'same.

This invention relates especially to hoisting derricks having a frame sufficiently rigid to be used with little or no outside guying so as to be especially adapted for use on small buildings or where guy supports are undesirable. The derrick frame may comprise frame members braced or guyed together and including front and back sills securely connected by sill irons which may substantially inclose the revolubly mounted foot block which is adapted to sustain a large part of the weight of the mast and boom and allow the I derrick frame to be turned around on caster or transporting devices secured to the sills, if desired, although the foot block maybe readily secured in alined position.

'In the accompanying drawings showing in a somewhat diagrammatic way an illustrative embodiment of this .invention, Figure 1 is a perspective view showing one form of derrick; and Fig. 2 is an enlarged vertical section through the foot block and adjacent parts.

The derrick may comprise a suitable frame formed of connected members of anydesired material, form and construction which may be braced and guyed to properly support the mast and boom and this frame is preferably bodily movable and may, if desired, be provided with suitable casters or transporting devices so as to be moved from place to place and facilitate the work. This frame may comprise suitable sills of timber or other material, such as the back sill 1 and the front sills 2, 8, which may be securely.

connected and given the desired rigidity by suitable frame plates or sill irons 27 28 which are bolted or otherwise secured to the adjacent ends of these sills. The frame 1 may also comprise a back stiff leg 4' secured as by the strap irons 8 to the back sill and mast bearing, such as the goose-neck 11 which may be provided with a suitable bearing for the upper end of the mast. In some cases it is desirable to further reinforce the frame by suitable bracing such as the strut 5 connected as by the strap irons 9, 10 to the stiff leg 4: and the back sill 1. The frame may be further stiffened by the use of suitable guys, such as 23, of wire cable or other suitable material having a loop, such as 22, which loosely engages the spider 12 or other member connected to or cooperating with the frame and which may comprise a turnbuckle, such as 24 connected, for instance, to the screw eye or bolt 25 in the front sill. A similar guy 21 may be used on the other side of the frame and tightened as by the turn-buckle 20 connected to the screw eye or bolt 19 in the other front sill 3. This frame may be movedfrom place to place on the work and to facilitate this casters or trans port members may be arranged at any suitable parts of theframe so as to support it andfacilitate its movement. As shown the ball casters 16, 17, 18 of any desired construction and preferably of suitable anti-,

friction ball bearing construction may be mounted at any suitable places on the front and back sills so as to come into bearing with the flooring when the derrick is movedv Patented Mar. 7, 1916.

nected boom'in the frame by providing a suitable revolubly mounted foot block in which the mast is supported and guided and which is adapted to substantially sustain the weight of the mast and boom and allow the derrick frame to be turned or shifted with respect thereto under some conditions.

For this purpose the metallic or other foot block 26 may be revolubly 'mounted in the sill irons, forinstance, by forming suitable supporting sleeves 36, 37 on the foot block, one or both of which may project sufficiently to extendbeyond the cooperating sill irons and directly engage the cooperating support 35 which may be interposed under this part of the derrick. This foot block is preferably formed with any suitable alining devices, such as the series of alining holes 34 which may be threaded, if desired, so as to be engaged by one or more alining devices, such as the alining eye bolt 33 shown in Fig,

2 and in this way hold the foot block securely in alinement with the frame. The foot block may be formed with a socket, such as 39, to accommodate the gudgeon pin or pintle 38 in the lower end of the mast 6, the upper end of the mast preferably having a similar gudgeon pin or pintle 13 extending through the upper frame bearing in the goose-neck 11 and spider 12. The mast if made of timber may have the usual reinforcing mast bands 29 at its lower end and may also be provided with mast plates 30 bolted or otherwise secured on each side of the mast and provided with holes to accommodate the foot pin or bolt 32 on which the boom 7 swings. This boom may have its foot reinforced by suitable boom plates '31 which further reinforces the bearing and maintains its alinement.

The boom may be provided with any suitable form of fal tackle, such as the fall blocks 56, 57, having the lifting hook 58 through which the fall line 45 is carried and guided over suitable sheaves, such as 53, 51,

L on the boom and mast and then if desired over any suitable block, such as the sister block 64, which may be hooked into or otherwise secured to the alining eye bolt 33 or otherwise mounted normally behind the mast and away from the boom, before this lift line 45 passes over the guide sheave 61 to the hoisting device or engine located at any suitable point'on the frame or otherwise, the end of this lift line being shown as secured. to the cleat 43 for convenience of illustration. As shown the fall block 56 may be secured in the shackle 54: in the boom band 55 and a similar shackle or securing device 63 may be used to support the topping lift or tackle comprising the blocks 48, 49 through which extends the topping line 46 having one end connected to the eye 59 and having its other end carried back over a suitable guide sheave 50 which may be located in a slot 52 in the upper end of the mast and through the sister block 64: and guide sheave 61 to the hoisting device or to the securing device or cleat 43, 4st, in some cases. It is desirable to have the block 18 connected to the shackle band 15, located if desired be low the upper mast band 14, through a suitable chain or other narrow or flexible connector 4;? so as to increase the angle through which the mast and boom may swing without undesirable interference with the guys or frame, and it is also possible to swing the boom around the side of the derrick adjacent the back stiff leg without moving the derrick frame by removing or otherwise securing the guy on that side of the derrick. If, for instance, in city building operations the iron for one or more floor units has been hoisted to the top of the building and some of it is to be distributed to the rear of the derrick, this can be done by disconnecting the side guy 23 from the front sill 2 and by carrying it around over the boom so that it is secured to the floor or building frame on the side of the mast substantially opposite to the back sill. The boom then has an effective angle of 180 or so and may distribute the desired part of the material throughout this space without moving the derrick frame. This form of derrick makes it possible, however, to readily turn or otherwise move the derrick frame and under service conditions the frame can be readily turned through the desired horizontal angle by first disengaging the alining eye bolts or other alining devices and then turning the frame about the foot block which may still rest solidly on its sup port and thus largely or substantially sustain the weight of the mast and boom and facilitate this turning operation. When another of the alining holes is brought into proper alinement with the holes in the sill irons the alining eye bolts or devices may be reinserted and the derrick quickly gotten into operating condition in this position.

Having described this invention in connection with a number of illustrative embodiments, forms, proportions, materials, parts and arrangements, to the details of which disclosure the invention is not of course to be limited, what is claimed as new and what is desired to be secured by Letters Patent is set forth in the appended claims.

1. In hoisting derricks, a derrick frame comprising a back sill and a front sill extending in both directions from said back sill, said sills being securely connected by sill irons at their adjacent portions, a back stiff leg connected to said back sill and provided with an upper mast bearing, removable guys connected to said front sill adjacent both ends thereof to reinforce and stiffen said frame, caster transport devices on said sill members, a foot block revolubly mounted in said sill irons and having a supporting member projecting below the lower adjacent frame members and formed with a mast socket, a mast having pins extending into the socket in said foot block and into the upper mast bearing and a boom swingingly mounted on said mast.

2. In hoisting derricks, a derrick frame comprising a back sill and a front sill ex tending in both directions from said back sill, said sills being securely connected at their adjacent portions, a back stiff legv con nected to said back sill and provided with an upper mast bearing, removable guys connected to said front sill adjacent both ends thereof to reinforce and stiffen said frame, a foot block revolubly mounted in said sill irons and formed with a mast socket, a mast having pins extending into the socket in said foot block and into the upper mast bearing and a boom swingingly mounted on said mast.

3. In hoisting derricks, a derrick frame comprising a back sill and a front sill extending in both directions from said back sills and substantially perpendicular with respect thereto, said sills being securely connected by sill irons at their adjacent portions, a back stifi leg connected to said back sill and provided with an upper mast bearing, removable guys connected to said front sill adjacent both ends thereof to reinforce and stiffen said frame, a caster transport devices on said sill members, a foot bearing in said frame, a mast having pins extending into the socket in said foot bearing and into the upper mast bearing and a boom swingingly mounted on said mast.

4:. In hoisting derricks, a stiff leg derrick frame provided with an upper'mast bearing, guys to reinforce and stiff-en said frame, a foot block revolubly mounted in said frame and having a supporting sleeve projecting below the same, means to lock said foot block against rotation in said frame, a mast having bearing members cooperating vvith said foot block and With the upper mast bearing, and

a boom swingingly mounted on said mast andprovided with fall tackle and topping tackle. a

5. In hoisting derricks, a derrick frame provided With an upper mast bearing, means to reinforce and stiffen said frame, a foot block revolubly mounted in said frame and having a supporting member projecting below the same, a mast having bearing members cooperating With said foot block and with the'upper mas-t bearing, and a boom swingingly mounted on said mast and provided With fall tackle and topping tackle.

6. In hoisting derricks, a derrick frame provided With an upper mast bearing, a foot block revolubly mounted in said frame, a mast having bearing members cooperating With said foot block and with the upper mast bearing, and a boom swingingly mounted on said mast.

MARTIN v, B. RULAND.

Witnesses:

HARRY L. DUNCAN, Jnssm B. KAY.

Copies of this patent may be obtained for five centseach, by addressing the Commissioner of Patents, Washington, D. 0.? 

